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About the ART27A
The Conrad Johnson ART27A is a high-end, limited production stereo power amplifier (only 250 units) designed for discerning audiophiles. It operates in pure Class A with KT88 output tubes configured in triode mode, delivering 36 watts per channel into 4 ohms with less than 1.5% total harmonic distortion. The amplifier features independent discrete regulated power supplies for output, input, and inverter stages, ensuring extraordinary linearity and low noise. It uses matched pairs of 4 KT88 tubes and 3 6922 tubes, premium Lundahl output transformers optimized for triode Class A operation, CJD Teflon capacitors, Vishay bulk metal foil resistors, and Cardas internal wiring with pure copper speaker terminals. The ART27A is praised for its exceptional resolution, musical transparency, vivid soundstage, and stable performance at high volume levels with suitable high-efficiency speakers. It weighs 63 lbs and measures 17.5"D x 19"W x 8.875"H. The amplifier is hand assembled and individually tested, backed by a 3-year limited warranty excluding vacuum tubes.
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